Kvltosis: the fraction of an album's points that remain if the album poll is inversely reweighted by voters' centricities (see below).

Hipness: the fraction of an album's points that remain if the album poll is reweighted by how many singles each voter's ballot listed.

Metalism (album): the fraction of an album's points that remain if the album poll is reweighted by voters' metalism (see below).

Monolithity: the fraction of an album's points that remain if you disregard ballots that include a song by the same artist.

Vitality (album): the fraction of an album's points that came from voters new to the poll that year.

Singularity: the fraction of a song's votes that remain if you disregard ballots that include an album by the same artist.

Centricity: how close a voter came to picking to the winning 10 albums.

Breadth: how close a voter came to picking a different artist for every album/song slot in every voting year.

Metalism (voter): what fraction of a voter's votes went to metal bands (arbitrarily defined).

Artist points: sum of their album points plus 2 points per song-vote.

Enthusiasm (artist): points, as above, per ballot.

Similarity is calculated for albums, songs and artists based on voter overlap, and for ballots and voters based on album+song+artist overlap.
The ballot and voter scores are weighted by album/song/artist popularity.